Hydrocarbons
0 Carbon Atoms
H2
    dihydrogen

1 Carbon Atom
CH4
Cmethane

2 Carbon Atoms
C2H6
C–Cethane
C2H4
C=Cethylene
C2H2
CCacetylene

3 Carbon Atoms
C3H8
C–C–Cpropane
C3H6
C=C–Cpropene
cyclopropane
C3H4
CC–Cpropyne
C=C=Callene
cyclopropene

4 Carbon Atoms
C4H10
C–C–C–Cbutane
isobutane
C4H8
C=C–C–C1-butene
C–C=C–C2-butene
isobutene
cyclobutane
methylcyclopropane
C4H6
CC–C–Cbut-1-yne
C–CC–Cbut-2-yne
C=C=C–C1,2-butadiene
C=C–C=Cbutadiene
cyclobutene
3-methylcyclopropene
methylenecyclopropane
1-methylcyclopropene
bicyclo(1.1.0)butane
C4H4
CC–C=Cvinylacetylene
C=C=C=Cbutatriene
cyclobutadiene
1,2-cyclobutadiene
cyclobutyne
methylenecyclopropene
bicyclo(1.1.0)but-1(3)-ene
tetrahedrane
C4H2
CC–CCdiacetylene
1-cyclobuten-3-yne
propalene

5 Carbon Atoms
C5H12
C–C–C–C–Cpentane
isopentane
neopentane
 
C5H10
C=C–C–C–Cpent-1-ene
C–C=C–C–Cpent-2-ene
2-methylbut-2-ene
2-methylbut-1-ene
3-methylbut-1-ene
cyclopentane
methylcyclobutane
ethylcyclopropane
1,1-dimethylcyclopropane
1,2-dimethylcyclopropane
C5H8
CC–C–C–Cpent-1-yne
C–CC–C–Cpent-2-yne
C=C=C–C–Cethylallene
C=C–C=C–Ctrans-piperylene
C=C–C–C=C1,4-pentadiene
C–C=C=C–C2,3-pentadiene
isoprene
3-methyl-1-butyne
1,1-dimethylallene
cyclopentene
methylenecyclobutane
1-methylcyclobutene
3-methylcyclobutene
vinylcyclopropane
ethylidenecyclopropane
3,3-dimethylcyclopropene
1,2-dimethylcyclopropene
1-methyl-
2-methylenecyclopropane
housane
1-methylbicyclo(1.1.0)butane
spiropentane
bicyclo(1.1.1)pentane
C5H6
CC–C=C–C3-penten-1-yne
CC–C–C=C1-penten-4-yne
C–CC–C=Cpyrylene
C=C=C–C=Cvinylallene
2-methyl-1-buten-3-yne
cyclopentadiene
1,2-cyclopentadiene
3-methylenecyclobutene
cyclopropylacetylene
vinylcyclopropene
3-vinylcyclopropene
ethenylidenecyclopropane
bicyclo(2.1.0)pent-2-ene
bicyclo(2.1.0)pent-1-ene
bicyclo(2.1.0)pent-1(4)-ene
spiro(2.2)pent-1-ene
tricyclo(2.1.0.02,5)pentane
(1.1.1)propellane
C5H4
CC–C–CC1,4-pentadiyne
CC–CC–Cpentadiyne
CC–C=C=Cethynylallene
C=C=C=C=Cpentatetraene
1,2,4-cyclopentatriene
3-ethynylcyclopropene
1-ethynylcyclopropene
bicyclo(2.1.0)penta-1,2-diene
spiro(2.2)penta-1,4-diene

6 Carbon Atoms
C6H14
C–C–C–C–C–Chexane
isohexane
3-methylpentane
2,2-dimethylbutane
2,3-dimethylbutane
C6H12
C=C–C–C–C–Chexene
C–C=C–C–C–C2-hexene
C–C–C=C–C–C3-hexene
2-methylpent-1-ene
2-methylpent-2-ene
4-methyl-2-pentene
4-methylpentene
2-ethyl-1-butene
3-methyl-1-pentene
3-methyl-2-pentene
neohexane
tetramethylethylene
2,3-dimethylbutene
cyclohexane
methylcyclopentane
ethylcyclobutane
1,1-dimethylcyclobutane
1,2-dimethylcyclobutane
1,3-dimethylcyclobutane
1,2,3-trimethylcyclopropane
1,1,2-trimethylcyclopropane
1-ethyl-1-methylcyclopropane
propylcyclopropane
isopropylcyclopropane
C6H10
CC–C–C–C–Chex-1-yne
C–CC–C–C–Chex-2-yne
C–C–CC–C–Chex-3-yne
C=C=C–C–C–C1,2-hexadiene
C=C–C=C–C–Chexadiene
C=C–C–C=C–C1,4-hexadiene
C=C–C–C–C=C1,5-hexadiene
C–C=C=C–C–C2,3-hexadiene
C–C=C–C=C–Cmethylpentadiene
t-butylacetylene
dimethylbutadiene
isobutylethyne
2-methylpenta-1,4-dien
4-methyl-1,3-pentadiene
4-methyl-2-pentyne
2-methyl-1,3-pentadiene
3-methyl-1,4-pentadiene
3-methyl-1,3-pentadiene
3-methyl-1-pentyne
3-methylene-1-pentene
3-methyl-1,2-pentadiene
2-methyl-2,3-pentadiene
4-methyl-1,2-pentadiene
cyclohexene
methylenecyclopentane
methylcyclopentene
3-methylcyclopentene
4-methylcyclopentene
C6H10
vinylcyclobutane
ethylidenecyclobutane
1,2-dimethylcyclobutene
3,4-dimethylcyclobuten
3,3-dimethylcyclobutene
2-cyclopropylpropene
1,1-Dimethyl-2-methylenecyclopropane
1,3,3-trimethylcyclopropene
allylcyclopropane
isopropylidenecyclopropane
1-methyl-1-vinylcyclopropane
1-propen-1-ylcyclopropane
1,2-dimethyl-3-methylenecyclopropane
1-methyl-2-vinylcyclopropane
1,2,3-trimethylcyclopropene
bicyclo(3.1.0)hexane
bicyclo(2.2.0)hexane
spiro(2.3)hexane
1-methylbicyclo(2.1.0)pentane
bicyclopropyl
1,3-dimethylbicyclo(1.1.0)butane
2,4-dimethylbicyclo(1.1.0)butane
bicyclo(2.1.1)hexane

C6H8
C=C–C=C–C=Chexatriene
C=C–CC–C–C1-hexen-3-yne
CC–C–C–C=C1-hexen-5-ynato
CC–C=C–C–C3-hexen-1-yne
CC–C–C=C–C4-hexen-1-yne
C=C=C–C–C=C1,2,5-hexatriene
C=C–C=C=C–C1,3,4-hexatriene
C–C=C=C=C–C2,3,4-hexatriene
C–CC–C=C–C2-hexen-4-yne
2-methyl-1-penten-3-yne
2-methyl-1-penten-4-yne
4-methyl-3-penten-1-yne
4-methyl-1,2,4-pentatriene
3-methylene-1-pentyne
divinylethylene
3-methyl-3-penten-1-yne
3-methyl-1,2,4-pentatriene
cyclohexyne
cyclohexa-1,2-diene
cyclohexadiene
1,4-cyclohexadiene
methylcyclopentadiene
5-methyl-1,3-cyclopentadiene
2-methyl-1,3-cyclopentadiene
3-methylenecyclopentene
4-methylenecyclopentene
C6H8
1,2-bis
(methylene)cyclobutane
3-vinylcyclobutene
ethynylcyclobutane
1-methyl-3-methylenecyclobutene
1,3-bis(methylene)cyclobutane
1,3-dimethyl-1,3-cyclobutadiene
1-propyn-1-ylcyclopropane
3-methyl-3-vinylcyclopropene
1-methylenespiro(2.2)pentane
1-methylene-2-vinylcyclopropane
2-propyn-1-ylcyclopropane
1-ethynyl-2-methylcyclopropane
1-ethynyl-1-methylcyclopropane
2-propen-1-ylidenecyclopropane
bicyclo(3.1.0)hex-2-ene
bicyclo(3.1.0)hex-1-ene
bicyclo(2.1.1)hexene
bicyclo(2.2.0)hex-2-ene
bicyclo(2.2.0)hex-1(4)-ene
spirohex-1-ene
1,1-bi(cyclopropylidene)
tricyclo(1.1.1.11,3)hexane
tricyclo(3.1.0.02,4)hexane
tricyclo(3.1.0.02,6)hexane
C6H6
CC–CC–C–C1,3-hexadiyne
CC–C–CC–C1,4-hexadiyne
CC–C–C–CC1,5-hexadiyne
C–CC–CC–C2,4-hexadiyne
CC–C=C–C=C1,3-hexadien-5-yne
CC–C–C=C=C1,2-hexadien-5-yne
C=C–CC–C=Cdivinylacetylene
C=C=C=C=C–C1,2,3,4-hexatetraene
C=C=C–C=C=C1,2,4,5-hexatetraene
benzene
fulvene
dewar benzene
benzvalene
3,4-bis(methylene)cyclobutene
bicyclopropenyl
(3)radialene
prismane
3-methylene-1-penten-4-yne
bicyclo(2.1.1)hex-2-yne
1-vinyl-1,3-cyclobutadiene
C6H4
CC–CC–CC1,3,5-hexatriyne
CC–CC–C=C1-hexene-3,5-diyne
CC–C=C–CC3-hexene-1,5-diyne
benzyne
1,1-bi(2-cyclopropen-1-ylidene)
3-methylene-1,4-pentadiyne
 
C6H2
CC–CC–CC1,3,5-hexatriyne